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Role of microbes in the smectite-to-illite reactionTemperature, pressure, and time have been thought to control the smectite-to-illite (S-I) reaction, an important diagenetic process used for petroleum exploration. We demonstrated that microorganisms can promote the S-I reaction by dissolving smectite through reduction of structural Fe(III) at room temperature and 1 atmosphere within 14 days. This reaction typically requires conditions of 300 degrees to 350 degrees C, 100 megapascals, and 4 to 5 months in the absence of microbial activity. These results challenge the conventional concept of the S-I reaction and of reaction kinetic models.
Document ID
20040092172
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kim, Jinwook
(NASA Stennis Space Center Stennis Space Center, MS, United States)
Dong, Hailiang
Seabaugh, Jennifer
Newell, Steven W.
Eberl, Dennis D.
Date Acquired
August 21, 2013
Publication Date
February 6, 2004
Publication Information
Publication: Science
Volume: 303
Issue: 5659
ISSN: 0036-8075
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

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